I think the biggest additional thing from that book is the concept of "affordances". Practically every UI related person I talk to talks about the concept inten

I think the biggest additional thing from that book is the concept of "affordances". Practically every UI related person I talk to talks about the concept intentionally or not and he put a name to it. I would agree the book has little in terms of practical advice nowadays. It was brief and straightforward at the time, and age has only lessened the impact.